I've been getting this crash pretty much non-stop on some servers (including my own). I'm not sure what it's caused by or if I should report it so maybe you guys can help me out here. It crashes with this stack trace with no trace in the logs: http://pastebin.com/VvJCqyxF. Pressing the reload chunks key combo before the crash happens stops it from crashing but it will do it again later anyway. What do you think?